/**
 * Copyright (c) 2011-2023, James Zhan 詹波 (jfinal@126.com).
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.jfinal.template.expr.ast;

import com.jfinal.template.stat.Location;
import com.jfinal.template.stat.ParseException;
import com.jfinal.template.stat.Scope;

/**
 * Ternary
 */
public class Ternary extends Expr {

    private Expr cond;
    private Expr exprOne;
    private Expr exprTwo;

    /**
     * cond ? exprOne : exprTwo
     */
    public Ternary(Expr cond, Expr exprOne, Expr exprTwo, Location location) {
        if (cond == null || exprOne == null || exprTwo == null) {
            throw new ParseException("The parameter of ternary expression can not be blank", location);
        }
        this.cond = cond;
        this.exprOne = exprOne;
        this.exprTwo = exprTwo;
        this.location = location;
    }

    public Object eval(Scope scope) {
        return Logic.isTrue(cond.eval(scope)) ? exprOne.eval(scope) : exprTwo.eval(scope);
    }
}








